Composite container and blank

ABSTRACT

An improved composite container and paperboard blank for forming a paperboard and metal composite container, said blank formed with score lines having sides converging at an angle of at least 90* for receiving an end of the metal portions of said container.

United States Patent Inventor App]. No. Filed Patented Assignee COMPOSITE CONTAINER AND BLANK Primary Examiner-David M. Bockenek Attorney-Young and Quigg 5 Chhs,4 Driving Figs.

[18. 2295., ABSTRACT: An improved composite container and paper- 229/5.5, 229/5.7 board blank for forming a paperboard and metal composite Int. 3651! 3/10 container, said blank formed with score lines having sides confield of Search 229/5.5, verging at an angle of at least 90 for receiving an end of the 5 .6. 5.7, 5.8; 220/65. 83 metal portions of said container.

l6 X'QiTEQR Y v 3 l 2: s l8 I S l4 PATENTEU AUG 3 l9?! A TTORNEYS COMPOSITE CONTAINER AND BLANK I This inventionrelates to an improved composite: container 1 and paperboard blank for. forming a paperboard and metal composite container. in another aspect, this invention'relates to an improved composite. containerand Rpaper blank foi-" forming a paperboard and metal composite'containerhaving. ,1

an improved .attachrnent of the: metal to-the-paperboard" sidewall..

ln heretoforeutilized'paperboard-and metal composite con tainers for packing potatochips, breakfast -cereals, and the like, as shown for example in U.S.Pat. No. 2 ,827;2l8,the

metal bottom retaining-member was forcedintothe paper-= board sidewall or was forcefully held to said sidewall by piercing pins; Forcing the end of a'metalmernbe r intothe paper-' board sidewall weakened the'sidewall and sometimes,: in situa}: tions where the metal'did not completely enter the sidewall;

left a sharp metal edge exposed and upon which edge. personshandling said container .couldbeinjured. lnlcontainers using I piercing pins, the container.wasalsd weakened andpersons 1;

handling the container were sometimesinjured by'improperly positioned pins.

It is therefore an object of this'invention to provide an im-" proved composite container and paperboard-blank forforrn' ing paperboard and metal composite containers. Another object of this invention is to provide-a. paperboard blank that is constructed to receive one endx'of-the metal-portion of thew container and provide a container'having' an improved attachment of the metal to the paperboard. Yet anothierobject 30 of this invention is to provide apaperboard blankthat is con structed to receive and cover an end of the-.metal'portionoff the container, thereby providinga safer: container. Otheraspects, objects, and advantages of the-present invention"will"'* become apparent from a study of the disclosure, the/appended claims,- and the drawings. r

The drawings show the improved'paperboard blank of this invention and the composite container=for1ned-With 'thatimproved blank.

' FIG. I is a longitudinal sectionalview of a composite con" tainer and the improved sidewall blank of this invention; FIG. 2 is a plan view of the improved paperboard blank; FIG. 3 is an end view ofthe blank ofFlG. 2, and

FIG. 4 is an enlarged view of the score line 'anda portion of blank4 as described above, the ends of the holding the improved paperboard blank of thisinvention.

FIG; 1 shows the improved paperboard and.metai-com'- posite'container that is constructedsof the [improwed paper board sidewall blank 4, a bottom closure member-6; and metal- I bottom-and top-crimping members 8, 9. The metal-crimping I v the sharp'edges of the metal end are covered by a side of the members 8, 9 each have inner arid outer flanges'lt), 12 form'- ing a channel receiving a top or bottom edge 14 ('shownin FIG. 2) or 15 and a bottom or top-portion or l7of sidewall blank 4. The channel of the bottom-crimping member 8 also receives a downwardly extending flange 18 of the bot tom closure member 6. The outerflanges'l2 of the crimping"- members 8, 9 each have a holding element 22 with an end .20 formed thereon. The holding elements 22 of the outer flangel I 12 are each crimped toward their respective inn'er flange 10 and into forcible contact with 'airmiter surface of the sidewall blank 4 for maintainingth'e therehetween paperboard portions of the container. The holding element 22 can also be fonned on the inner flange 10 of the"top-crirnp ing member! and crirnped toward its respective outer-flange as described- 1 above. Providing a holding element 22 on the inner'flartgel-fl of the top-crimping member 9 and crimping 'said elernent' toward its associated outer flange l2 islpartic'ularlyirnportant for protecting a person that .is placing hisiiands'withinthe fonned'container.

Referring to FIG. 2, a bottom scoreiine 26"isforr'ned on the m .L outer surface 24 of the bottom portionlof-of the sidewall blank 4 spaced from the bottom 'edge'14 of said blank 4. The

bottom score line 26 extends traversely ofthe'blank dl Referring to FIGS. 3 and '4, the bottom score line first andsecond sides 28, 29 converging toward one another lndi'ntersecting within the sidewall'4. The angleof interseC-' tionof' saidfirstand second sides28 ',"29 i's at least 90 and preferabl'y is exactly a 90 angle to provide frictional contact be'tw'een'the'holding element 22 and the sidewall blank 4 for 5 fixedly'attaching the metal-crimping member s to the blank 4. The 'depthof thescore line 26-is sufficientlylargeasto receive within thescore line 26 the entire end 20 0f the holding ele-' ment22of' the' bottom crimping member S of the composite container 2 in'the formedconditionFor example, when the 'nds- 20 -of+the= holding element 22' of the bottomor topcrimping members8, 9 have a thickness of 0.0088 inch, it is preferred that the depth of the score lines'have a depth of at least-=0.00' /6 inch. By so constructing the score lines of the sidewallblank4 of this invention; the entire end 20 of each holding member 22-is covered by the sidewall 4. 1n the com-' posite' container 2 with a metal bottom-crimping member'8 having aholdingmember 22 with a thickness of 0.0088 inch, it is preferred that a first side 28 of the score line 26 is adjacent and spaced-from-the bottom edge 14 of the sidewall blank 4 ande'xtends-inwardly and upwardly relative to th'e outer sur-' fnc'e 24of the blank 4 and that the second side 29 of the score line"26 '-has a width of'at least 0.0088 inch, is separated from the' bottom edge of the sidewall 4 by the intervening first side ;2 8"of thescore line 26, and extends outwardly and upwardly from thefirstside 28 ofthescore line26to the outer surface 24 of-thesidewall blank 4 at an angle90 relative to the first side-"28 for 'coveringthe entire end 20of the metal-holding member '22'by the abutting second side 29 or the' score' line 26. 11 in composite containers having abottdm-critrtping'hember 8 and 'a metai=top-crimping member 9, a top score line 32 is formed-onthe outer surface 24 of the sidewallblank4spaced fromthe'bottomportion- 16 of the blankand extending tra'versely'of the blank 4 substantially parallel'to the bottom score line26ll t'is also preferred that a second top score line 33 to be formed'on the inner surface 26 of the sidewall blank'4spaced from the'botto'rn portion 16 of the blank and extending traversely-oftheblank 4 substantially parallel to thebottom score l ine 26." Similar to the score line 26 described above, score linen-32, 33 each have two sidesconverging toward one anodiei' andinter'secting within thesidewall blank-4 with the angieuof intersectionof the 'sidesbeing-at least 90 and the depthof the score lines being at least 0.0076 inch.

By so-constructing an improved composite container and elernents of the metal portions of the composite container are moved into a preformed score line during construction of the container, thereby avoiding damage to the container while atto force the ends into the sidewall and assuring that score iine thereby'avoiding possible injury to a person handiingsaid container.

lclairnr- 1. An improved paperboard sidewall blank of substantially eectangularformation'for formin'g'a paperboard and metal composite container comprising paperboard sidewalls and a bottom closure-member and a metal bottom-crimping ment'bergsaid metal bottom-crimping memberhaving inner flanges forming a channel for receiving a bottom abottom portion of the sidewallsand 'a'downwardly l exteoding'flange of the bottom closure member with an end of a holding element of said outer flange-being crimped toward the-associated inner flange and into forcible contact with an :outer-surface ofthesidewall for maintaining the therebetween paper'bmrdbdtomclosure-flango and adjacent bottom por-' wardly relative to the outer surface of the sidewall and t said second side of the score line having a width of at least 0.0088 inch, being separated from the bottom edge of the sidewall by the intervening first side of the score line, and extending outwardly and upwardly from the first side of the score line to the outer surface of the sidewall at an angle of substantially 90 relative to the first side of the score line.

2. An improved paperboard sidewall blank, asset forth in claim 1, wherein the depth of said score line is at least 0.0076

- bottom closure member and a metal bottom-crimping member, said metal bottom-crimping member having inner and outer flanges forming a channel for receiving a bottom edge and a bottom portion of the sidewalls and a downwardly extending flange of the bottom closure member with an end of A a holding element of said outer flange being crimped toward,

the associated inner flange and into forcible contact with an outer surface of the sidewall for maintaining the therebetween paperboard bottom closure flange and adjacent bottom portion of the sidewalls in forcible contact one against the other, the improvement comprising:

a bottom score line on an outer surface of the'bottom portion of the sidewall blank spaced from the edge of the blank and extending traversely of the blank, said score line having first and second sides converging toward one another and intersecting within the sidewall; and

v a top score line on the outer surface of the sidewall blank spaced from the bottom portion of the blank and extending traversely of the blank substantially parallel to the bottom score line,'said score line having two sides converging toward one another and intersecting within the sidewall with the angle of intersection of the sides being at least and the depth of 0.0076 inch.

4. An improved metal and paperboard composite container having paperboardsidewalls with a plurality of score'lines and a bottom closure member with a downwardly. extending flange, a metal bottom-crimping memberhavinginner and outer flanges forming a channel receiving a bottomedge and portion of the sidewalls and the downwardly extending flange of 'the bottom closure member, and a metal top-crimping member having inner and outer flangesforming a channelreceiving a top edge and portion of the sidewalls the improvement comprising:

a bottom score line on an outer surface of the bottom portion of the sidewalls spaced from the edge of the sidewalls and extending about the container, said score line-having first and second sides converging toward one another and intersecting within the sidewalls, said first side of the a score like being adjacent and spaced from a bottom edge of the sidewall and extending inwardly and upwardly relative to the outer surface of the sidewall and said second side of the score line having a width of at least 0.0088

inch, being separated from the bottom edge of the sidewall by the intervening first side of the score line, and extending outwardly and upwardly from the first side of the score line to the outer surface of the sidewall at an angle of substantially 90 relative to the first side of the score line; and

holding elements formed on the outer flanges of the crimping members, each holding element extending toward its respective inner flange and having an end positioned entirely within the bottom score line of the sidewall blank.

5; An improved container, as set forth in claim 4, wherein each end of each holding element has a thickness riot greater than 0.0088 inch and the score lines have a depth of at least 0,0076 inch.

said score line being at least 7 

1. An improved paperboard sidewall blank of substantially rectangular formation for forming a paperboard and metal composIte container comprising paperboard sidewalls and a bottom closure member and a metal bottom-crimping member, said metal bottom-crimping member having inner and outer flanges forming a channel for receiving a bottom edge and a bottom portion of the sidewalls and a downwardly extending flange of the bottom closure member with an end of a holding element of said outer flange being crimped toward the associated inner flange and into forcible contact with an outer surface of the sidewall for maintaining the therebetween paperboard bottom closure flange and adjacent bottom portion of the sidewalls in forcible contact one against the other, the improvement comprising: a bottom score line on an outer surface of the bottom portion of the sidewall blank spaced from the edge of the blank and extending traversely of the blank, said score line having first and second sides converging toward one another and intersecting within the sidewall, said first side of the score line being adjacent and spaced from the bottom edge of the sidewall and extending inwardly and upwardly relative to the outer surface of the sidewall and said second side of the score line having a width of at least 0.0088 inch, being separated from the bottom edge of the sidewall by the intervening first side of the score line, and extending outwardly and upwardly from the first side of the score line to the outer surface of the sidewall at an angle of substantially 90* relative to the first side of the score line.
 2. An improved paperboard sidewall blank, as set forth in claim 1, wherein the depth of said score line is at least 0.0076 inch.
 3. An improved paperboard sidewall blank of substantially rectangular formation for forming a paperboard and metal composite container comprising paperboard sidewalls and a bottom closure member and a metal bottom-crimping member, said metal bottom-crimping member having inner and outer flanges forming a channel for receiving a bottom edge and a bottom portion of the sidewalls and a downwardly extending flange of the bottom closure member with an end of a holding element of said outer flange being crimped toward the associated inner flange and into forcible contact with an outer surface of the sidewall for maintaining the therebetween paperboard bottom closure flange and adjacent bottom portion of the sidewalls in forcible contact one against the other, the improvement comprising: a bottom score line on an outer surface of the bottom portion of the sidewall blank spaced from the edge of the blank and extending traversely of the blank, said score line having first and second sides converging toward one another and intersecting within the sidewall; and a top score line on the outer surface of the sidewall blank spaced from the bottom portion of the blank and extending traversely of the blank substantially parallel to the bottom score line, said score line having two sides converging toward one another and intersecting within the sidewall with the angle of intersection of the sides being at least 90* and the depth of said score line being at least 0.0076 inch.
 4. An improved metal and paperboard composite container having paperboard sidewalls with a plurality of score lines and a bottom closure member with a downwardly extending flange, a metal bottom-crimping member having inner and outer flanges forming a channel receiving a bottom edge and portion of the sidewalls and the downwardly extending flange of the bottom closure member, and a metal top-crimping member having inner and outer flanges forming a channel receiving a top edge and portion of the sidewalls, the improvement comprising: a bottom score line on an outer surface of the bottom portion of the sidewalls spaced from the edge of the sidewalls and extending about the container, said score line having first and second sides converging toward one another and intersecting within the sidewalls, said first side of the score like being adjacent and spaced from a bottom edge Of the sidewall and extending inwardly and upwardly relative to the outer surface of the sidewall and said second side of the score line having a width of at least 0.0088 inch, being separated from the bottom edge of the sidewall by the intervening first side of the score line, and extending outwardly and upwardly from the first side of the score line to the outer surface of the sidewall at an angle of substantially 90* relative to the first side of the score line; and holding elements formed on the outer flanges of the crimping members, each holding element extending toward its respective inner flange and having an end positioned entirely within the bottom score line of the sidewall blank.
 5. An improved container, as set forth in claim 4, wherein each end of each holding element has a thickness not greater than 0.0088 inch and the score lines have a depth of at least 0.0076 inch. 